Self-lubricating wood bearing and surface.



L. S. BAGHE.

S ELF LUBEIGATING WOOD BEARING AND SURFACE.

APPLIUATIOK FILED JULY 6, 1911.

1,076,941. Patented 0013.28, 1913.

WITNESSES: INVENTOR UNITED STATES PATENT" OFFICE.

LEIGH s. mean, or" sounnnnoongnnw mm,

CA'IING' COMPANY; OF"'BOUND'BBBOK, JERSEY.

To all whom it may concern:

Be itknownthat I, LEIGHS; BAoHn; a

citizen of the United States, andla resident.- of 'Boundb'rook, .in the county of Somersetand State of:NewiJersey, have invented certain new and useful selfaLu-bricating wood Bearings and Surfaces;.-of which the following is a specifications; H

The inwentlon relates to a: be'arm ,or bearingcsurfaces of wood, themateria being-so treated that itais absolutely sel-f lubricat-ingand will retain its lubricationa The object of the invention is to produce a wood' bearing of "any desired: form so treated that it will maintain -a-- luhricatingv surface, be 1 practically. nondestruct blel; as againstweara and: will retain llESr lubricating.

features under: all conditions of I use;

Referring to the drawings Figure 1-illus* tratesia bloole-ofi wood of impropercharm:-

ten" the imperfectionshowing;duringitreat 11161113.) Eigr2'xillustratesa: block oii woodwof trative of. a perfectly treated J wood bearing.

Itds not newin the 'art to' treat wood and v fiber with water-proofingz-and" lubricating materials which give. a greater or less permeating efl ect, nor-isitnewto stain wood and filterreithkenwith or without a waterresisting filler. The invention hereindefined goes further than the mere staining or surface-lubrication of wood-"orfib'er and contemplates a new field in which the material to. be used is. completely, regularly. and'ab solutelyj permeated by the impregnatingsub stance wh1c h, as hereinafter described, is bound m the fiber so that there is a'complete' and efiicient lubrication at all times without liability of dissipation of theimpregnating material at certainparts of the structure.

The process under which the hearings or bearing surfaces are treated is fully described in a co-pending application, Serial N 0. 637,207, filed July 6, 1911, entitled Process of treating and coloring wood, and the process per 86 forms no part of the present application, which is confinedto an article of manufacture, namely, abearing of wood which is selflubricating, non imper vious to moisture, and has wearing qualities to almost unlimited capacity.

In producing the bearings a suitable block of substantially'dry wood or fiber of anaio,

Specifications! Letters Patent.

Application filed J'ulyfi, 1911.

element the coloring, matter. .trated in the drawings;

ASSiGNOlt-TO GRAPHITE Loam newness-mt; AI" coaromrron or new saw-tonmoarmaxwoom BEARING AND summon.

Patented Oct. 28:1913. Serial-No 63?;206.

gouscharacter isu-tilized and this block of wood or fiber is-subjected to treatment in: a boiling mass of saturated hydro-carbon, such; as pa-rafiin, awax, andmxidized hydro-carbon halvingi a low meltingpoint, such-asiflu rosin, :througli which mixture isinfused :1 coloring-zmatter:preferably: such as-is soluble in oil,- as forinstance, .a coloring matter having an" indulinbase madesoluble withstearin and olein. Insometreatments stearic acid'isalso usedimthe-bath; The wood or filber: is-boiled in this bath i until its gravity is such-that itfalls to-the bottomof thereceptacle, thisbeing the-best-indica tion that. itis thoroughly impregnated. There; is a particular advantage in subjecting thematerial -to Joe-treated to the 4 bathhaving as an This isillus In Fig. 1, there is showna block of wood or. analogous-fibera, having streaks 5,. of various proportions extending along or through the-wood -Thesestreaks are due to tight-grain "dry-rot. or sap-grain which ordinarily 'wouldlnot' appear in the material and: would not be discernible-- in I using the wood in- .the ordinary arts of .manuifactu re'. When such a block is submitted to treatment, the streaking indicated by the letter I), is promi-nentlyishown'in light colors; Theimpregnating. materials do not carry through. in-these streaks, andlas the impregnating. material acts as a conveyerfor the coloring matte'r,.such portions are uncolored and readily indicate whether or not the block of wood or fiber is suitable for use.

Figs-2 illustrates a block 'of' wood or fib'er a, which-has no checks, tight-grain dryrot or sap-grain and shows a perfect material suitable for bearings, shuttles or like devices wherein an even and perfect filling and lubrication of the material is most essential.

In the bearings herein described, there is a permanency of homogeneous lubrlcatlon apparently due to the binding effect of the coloring matter with reference to the 1mpregnating materials. I

In Fig.3 there is well illustrated this fea ture of uneven distribution of the lubricant. Fig. 3 illustrates a sectional view ofa straight line bearing treated merely with an impregnating" oil and illustratlng the drying out of the oil at the central portionc, and the excess lubrication at the ends e, e.

It has been found that practically all wood bearings treated with a lubricant under methods heretofore known, act as illustrated in Fig. 3. In fact, the oil or grease of the impregnating material boils out at the ends of the bearing leaving the center comparatively dry.

, In Fig. 4 there is illustrated a sectional bearing f, treated as herein described, wherein there is a homogeneous and complete saturation of the material with the lubricant which is so bound by the coloring matter that there is no dissipation at any given point. Such a hearing will run with comparatively no Wear and for an indefinite I period inasmuch as it is perfectly lubricated throughout its entire fiber. Furthermore it may be treated as a homo eneous piece of metal and when bored and finished considerable extent although excellent re sults have been attained with a mixture substantially as follows: paraffin 100 lbs, carnauba wax 20 lbs., rosin, 20 lbs, coloring matter lbs, using in some instances a comparatively small portion by weight of stearic acid. It is a peculiarity of the treatment that, without the coloring matter, it is impossible to ascertain whether or not the material is properly impregnated. With the coloring matter, however, the material immediateiy shows, after treatment, the streaking illustrated in Fig. l (denoting improper impregnation) or the perfect form of Fig. 2.

The advantages are apparent inasmuch as with the given material, thefine work and expensive labor necessary to work the material into finished form need only be expended upon suitable materials for producing perfect goods. Furthermore, the material will be evenly and perfectly filled through and through and will produce articles in perfect balance.

Obviously, the material may be worked into many forms other than the bearings of cylindrical form herein described and, in fact, may be used wherever a self-lubricating material is required.

. What I claim as my invention and desire to secure by Letters Patent is:

1. As an article of manufacture, a lubricated bearing of wood or the like impregnated through and through with a saturated hydro-carbon, wax, oxidized hydro-carbon and a coloring matter.

2. As an article of manufacture a lubriated bearing of wood or fiber impregnated through and through by subjecting to a hotbath containing saturated hydro-carbon, wax, oxidized hydro-carbon and a coloring matter.

3. As an article of manufacture a lubricated bearing of wood or fiber impregnated through and through by subjecting to' a hot bath containing saturated hydro-carbon, wax, oxidized hydro-carbon, steari c acidand a coloring matter.

4. As an article of manufacture, a lubricated bearing of wood or the like impregnated through and through with a saturated hydro-carbon, wax, oxidized hydro-carbon, stearic acid and a coloring matter.

LEIGH S. BACHE.

Witnesses:

A. LANG, Gno. O. SMALLEY. 

